Air purifier



FIG. 1 is a perspective view of an air purifier of the new design;

FIG. 2 is a left side elevational view of the air purifier of FIG. 1;

FIG. 3 is a front elevational view of the air purifier of FIG. 1;

FIG. 4 is a right elevational view of the air purifier of FIG. 1;

FIG. 5 is a back elevational view of the air purifier of FIG. 1;

FIG. 6 is a top plan view of the air purifier of FIG. 1; and,

FIG. 7 is a bottom plan view of the air purifier of FIG. 1.

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a air purifier, as shown and described. 